| Title | Numerical study of transmissive liquid crystal Pancharatnam-Berry gratings with small periods |
| Author | |
| Corresponding Author | Wei, Qi-huo |
| Publication Years | 2023-02-02
|
| DOI | |
| Source Title | |
| ISSN | 0740-3224
|
| EISSN | 1520-8540
|
| Volume | 40Issue:2 |
| Abstract | Advances in patterning molecular orientations in liquid crystals have made possible the fabrications of various high-quality flat optical elements, ranging from gratings to beam shaping devices. These devices are based on modulating the Pancharatnam-Berry (PB) phase. It is well known that the diffraction efficiency for liquid crystal PB optical elements decreases for large diffraction angles. Here we study this issue using numerical simulations based on finite-difference time-domain algorithms and show that the optical efficiency formula commonly used for liquid crystal gratings deviates significantly from numerical results and is inaccurate for small grating peri-ods because of its assumption that light beams do not diffract inside the liquid crystal films. We show that, for large diffraction angles, the polarization of the diffracted beam is generally elliptically polarized, and we further show that, by using liquid crystal materials with larger birefringence An similar to 0.4, the diffraction efficiency for a grating period of 0.8 gm can go above 90%, which can be used for various flat optical elements with numerical aperture similar to 0.7.(c) 2023 Optica Publishing Group |
| URL | [Source Record] |
| Indexed By | |
| Language | English
|
| SUSTech Authorship | First
; Corresponding
|
| Funding Project | Shenzhen Science and Technology Program[GJHZ20200731095212036]
; National Natural Science Foundation of China[12174177]
|
| WOS Research Area | Optics
|
| WOS Subject | Optics
|
| WOS Accession No | WOS:000935859800004
|
| Publisher | |
| ESI Research Field | PHYSICS
|
| Data Source | Web of Science
|
| Citation statistics |
Cited Times [WOS]:0
|
| Document Type | Journal Article |
| Identifier | http://kc.sustech.edu.cn/handle/2SGJ60CL/502123 |
| Department | Department of Mechanical and Energy Engineering 工学院_材料科学与工程系 |
| Affiliation | 1.Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China 2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China |
| First Author Affilication | Department of Mechanical and Energy Engineering |
| Corresponding Author Affilication | Department of Mechanical and Energy Engineering |
| First Author's First Affilication | Department of Mechanical and Energy Engineering |
| Recommended Citation GB/T 7714 |
Liu, S. H. A.,Yu, H. A. O.,Jiang, M. I. A. O.,et al. Numerical study of transmissive liquid crystal Pancharatnam-Berry gratings with small periods[J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS,2023,40(2).
|
| APA |
Liu, S. H. A.,Yu, H. A. O.,Jiang, M. I. A. O.,Feng, J. U. N.,&Wei, Qi-huo.(2023).Numerical study of transmissive liquid crystal Pancharatnam-Berry gratings with small periods.JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS,40(2).
|
| MLA |
Liu, S. H. A.,et al."Numerical study of transmissive liquid crystal Pancharatnam-Berry gratings with small periods".JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS 40.2(2023).
|
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment